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<p>Log session start time Fri Sep 12 09:47:46 CST 2025</p><p></p>

<table cellspacing="0">
<tr class="header">
<td class="Level">Level</td>
<td class="Date">Date</td>
<td class="Message">Message</td>
<td class="MethodOfCaller">MethodOfCaller</td>
<td class="FileOfCaller">FileOfCaller</td>
<td class="LineOfCaller">LineOfCaller</td>
</tr>


<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:46,637</td>
<td class="Message">HV000001: Hibernate Validator 8.0.2.Final</td>
<td class="MethodOfCaller">&lt;clinit&gt;</td>
<td class="FileOfCaller">Version.java</td>
<td class="LineOfCaller">21</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:46,708</td>
<td class="Message">Starting JeecgSystemApplication using Java 17.0.15 with PID 7269 (/Users/mac/Desktop/project/jeecg/jeecg-boot/jeecg-module-system/jeecg-system-start/target/classes started by mac in /Users/mac/Desktop/project/jeecg/jeecg-boot)</td>
<td class="MethodOfCaller">logStarting</td>
<td class="FileOfCaller">StartupInfoLogger.java</td>
<td class="LineOfCaller">53</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:46,709</td>
<td class="Message">The following 1 profile is active: &quot;dev&quot;</td>
<td class="MethodOfCaller">logStartupProfileInfo</td>
<td class="FileOfCaller">SpringApplication.java</td>
<td class="LineOfCaller">658</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:48,951</td>
<td class="Message">Multiple Spring Data modules found, entering strict repository configuration mode</td>
<td class="MethodOfCaller">multipleStoresDetected</td>
<td class="FileOfCaller">RepositoryConfigurationDelegate.java</td>
<td class="LineOfCaller">295</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:48,954</td>
<td class="Message">Bootstrapping Spring Data Redis repositories in DEFAULT mode.</td>
<td class="MethodOfCaller">registerRepositoriesIn</td>
<td class="FileOfCaller">RepositoryConfigurationDelegate.java</td>
<td class="LineOfCaller">143</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,043</td>
<td class="Message">Finished Spring Data repository scanning in 72 ms. Found 0 Redis repository interfaces.</td>
<td class="MethodOfCaller">registerRepositoriesIn</td>
<td class="FileOfCaller">RepositoryConfigurationDelegate.java</td>
<td class="LineOfCaller">211</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,162</td>
<td class="Message"> ******************* init miniDao config [ begin ] *********************** </td>
<td class="MethodOfCaller">miniDaoBeanScannerConfigurer</td>
<td class="FileOfCaller">MinidaoAutoConfiguration.java</td>
<td class="LineOfCaller">23</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,163</td>
<td class="Message"> ------ minidao.base-package ------- org.jeecg.modules.jmreport.*,org.jeecg.modules.drag.*</td>
<td class="MethodOfCaller">miniDaoBeanScannerConfigurer</td>
<td class="FileOfCaller">MinidaoAutoConfiguration.java</td>
<td class="LineOfCaller">25</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,164</td>
<td class="Message"> *******************  init miniDao config  [ end ] *********************** </td>
<td class="MethodOfCaller">miniDaoBeanScannerConfigurer</td>
<td class="FileOfCaller">MinidaoAutoConfiguration.java</td>
<td class="LineOfCaller">42</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,345</td>
<td class="Message">Overriding bean definition for bean &#39;classifier&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.a; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/a.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,347</td>
<td class="Message">Overriding bean definition for bean &#39;end&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.b; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/b.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,347</td>
<td class="Message">Overriding bean definition for bean &#39;http&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.c; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/c.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,349</td>
<td class="Message">Overriding bean definition for bean &#39;knowledge&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.d; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/d.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,350</td>
<td class="Message">Overriding bean definition for bean &#39;llm&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.e; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/e.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,351</td>
<td class="Message">Overriding bean definition for bean &#39;enhanceJava&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.enhance.a; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/enhance/a.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,352</td>
<td class="Message">Overriding bean definition for bean &#39;reply&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.f; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/f.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,354</td>
<td class="Message">Overriding bean definition for bean &#39;start&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.g; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/g.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,355</td>
<td class="Message">Overriding bean definition for bean &#39;subflow&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.h; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/h.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,356</td>
<td class="Message">Overriding bean definition for bean &#39;switch&#39; with a different definition: replacing [Generic bean: class=org.jeecg.modules.airag.flow.component.i; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null; defined in URL [jar:file:/Users/mac/.m2/repository/org/jeecgframework/boot3/jeecg-aiflow/1.1.1/jeecg-aiflow-1.1.1.jar!/org/jeecg/modules/airag/flow/component/i.class]] with [Generic bean: class=com.yomahub.liteflow.core.proxy.DeclWarpBean; scope=singleton; abstract=false; lazyInit=null; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; fallback=false; factoryBeanName=null; factoryMethodName=null; initMethodNames=null; destroyMethodNames=null]</td>
<td class="MethodOfCaller">logBeanDefinitionOverriding</td>
<td class="FileOfCaller">DefaultListableBeanFactory.java</td>
<td class="LineOfCaller">1333</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,651</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportCategoryDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,651</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,651</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportDataSourceDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportDbDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportDbFieldDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportDbParamDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportDictDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportDictItemDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportExportJobDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportExportLogDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportLinkDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportMapDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.jmreport.desreport.dao.JimuReportShareDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,652</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.JimuDragCategoryDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.JimuDragMapDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.JimuReportIconLibDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.OnlDragCompDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.OnlDragDataSourceDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.OnlDragDatasetHeadDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.OnlDragDatasetItemDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.OnlDragDatasetParamDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.OnlDragPageCompDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,653</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.OnlDragPageDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:49,654</td>
<td class="Message">register minidao name is { org.jeecg.modules.drag.dao.OnlDragShareDao }</td>
<td class="MethodOfCaller">doScan</td>
<td class="FileOfCaller">MiniDaoClassPathMapperScanner.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 09:47:49,659</td>
<td class="Message">Cannot enhance @Configuration bean definition &#39;com.yomahub.liteflow.springboot.config.LiteflowMainAutoConfiguration&#39; since its singleton instance has been created too early. The typical cause is a non-static @Bean method with a BeanDefinitionRegistryPostProcessor return type: Consider declaring such methods as &#39;static&#39; and/or marking the containing configuration class as &#39;proxyBeanMethods=false&#39;.</td>
<td class="MethodOfCaller">enhanceConfigurationClasses</td>
<td class="FileOfCaller">ConfigurationClassPostProcessor.java</td>
<td class="LineOfCaller">514</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:50,321</td>
<td class="Message">===============(1)创建缓存管理器RedisCacheManager</td>
<td class="MethodOfCaller">redisCacheManager</td>
<td class="FileOfCaller">ShiroConfig.java</td>
<td class="LineOfCaller">299</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:50,323</td>
<td class="Message">===============(2)创建RedisManager,连接Redis..</td>
<td class="MethodOfCaller">redisManager</td>
<td class="FileOfCaller">ShiroConfig.java</td>
<td class="LineOfCaller">320</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:50,969</td>
<td class="Message">Initializing Spring embedded WebApplicationContext</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">ServletContextImpl.java</td>
<td class="LineOfCaller">372</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:50,970</td>
<td class="Message">Root WebApplicationContext: initialization completed in 3981 ms</td>
<td class="MethodOfCaller">prepareWebApplicationContext</td>
<td class="FileOfCaller">ServletWebServerApplicationContext.java</td>
<td class="LineOfCaller">301</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:51,642</td>
<td class="Message">{dataSource-1,master} inited</td>
<td class="MethodOfCaller">init</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">673</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:51,643</td>
<td class="Message">dynamic-datasource - add a datasource named [master] success</td>
<td class="MethodOfCaller">addDataSource</td>
<td class="FileOfCaller">DynamicRoutingDataSource.java</td>
<td class="LineOfCaller">154</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:51,644</td>
<td class="Message">dynamic-datasource initial loaded [1] datasource,primary datasource named [master]</td>
<td class="MethodOfCaller">afterPropertiesSet</td>
<td class="FileOfCaller">DynamicRoutingDataSource.java</td>
<td class="LineOfCaller">237</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:51,697</td>
<td class="Message">当前数据库类型: MYSQL</td>
<td class="MethodOfCaller">mybatisPlusInterceptor</td>
<td class="FileOfCaller">MybatisPlusSaasConfig.java</td>
<td class="LineOfCaller">138</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:53,113</td>
<td class="Message"> --- redis config init --- </td>
<td class="MethodOfCaller">redisTemplate</td>
<td class="FileOfCaller">RedisConfig.java</td>
<td class="LineOfCaller">56</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,467</td>
<td class="Message">Using default implementation for ThreadExecutor</td>
<td class="MethodOfCaller">instantiate</td>
<td class="FileOfCaller">StdSchedulerFactory.java</td>
<td class="LineOfCaller">1220</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,469</td>
<td class="Message">Job execution threads will use class loader of thread: main</td>
<td class="MethodOfCaller">initialize</td>
<td class="FileOfCaller">SimpleThreadPool.java</td>
<td class="LineOfCaller">268</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,478</td>
<td class="Message">Initialized Scheduler Signaller of type: class org.quartz.core.SchedulerSignalerImpl</td>
<td class="MethodOfCaller">&lt;init&gt;</td>
<td class="FileOfCaller">SchedulerSignalerImpl.java</td>
<td class="LineOfCaller">61</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,478</td>
<td class="Message">Quartz Scheduler v.2.3.2 created.</td>
<td class="MethodOfCaller">&lt;init&gt;</td>
<td class="FileOfCaller">QuartzScheduler.java</td>
<td class="LineOfCaller">229</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,480</td>
<td class="Message">Using db table-based data access locking (synchronization).</td>
<td class="MethodOfCaller">initialize</td>
<td class="FileOfCaller">JobStoreSupport.java</td>
<td class="LineOfCaller">672</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,482</td>
<td class="Message">JobStoreCMT initialized.</td>
<td class="MethodOfCaller">initialize</td>
<td class="FileOfCaller">JobStoreCMT.java</td>
<td class="LineOfCaller">145</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,483</td>
<td class="Message">Scheduler meta-data: Quartz Scheduler (v2.3.2) &#39;MyScheduler&#39; with instanceId &#39;MacBook-Air.local1757641674469&#39;
  Scheduler class: &#39;org.quartz.core.QuartzScheduler&#39; - running locally.
  NOT STARTED.
  Currently in standby mode.
  Number of jobs executed: 0
  Using thread pool &#39;org.quartz.simpl.SimpleThreadPool&#39; - with 10 threads.
  Using job-store &#39;org.springframework.scheduling.quartz.LocalDataSourceJobStore&#39; - which supports persistence. and is clustered.
</td>
<td class="MethodOfCaller">initialize</td>
<td class="FileOfCaller">QuartzScheduler.java</td>
<td class="LineOfCaller">294</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,484</td>
<td class="Message">Quartz scheduler &#39;MyScheduler&#39; initialized from an externally provided properties instance.</td>
<td class="MethodOfCaller">instantiate</td>
<td class="FileOfCaller">StdSchedulerFactory.java</td>
<td class="LineOfCaller">1374</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,485</td>
<td class="Message">Quartz scheduler version: 2.3.2</td>
<td class="MethodOfCaller">instantiate</td>
<td class="FileOfCaller">StdSchedulerFactory.java</td>
<td class="LineOfCaller">1378</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:54,485</td>
<td class="Message">JobFactory set to: org.springframework.scheduling.quartz.SpringBeanJobFactory@4c864fd0</td>
<td class="MethodOfCaller">setJobFactory</td>
<td class="FileOfCaller">QuartzScheduler.java</td>
<td class="LineOfCaller">2293</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:55,835</td>
<td class="Message">component aspect implement[nodeProcessAspect] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">CmpAroundAspectBeanProcess.java</td>
<td class="LineOfCaller">32</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,025</td>
<td class="Message">proxy component[classifier] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,039</td>
<td class="Message">proxy component[end] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,058</td>
<td class="Message">proxy component[http] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,072</td>
<td class="Message">proxy component[knowledge] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,079</td>
<td class="Message">proxy component[llm] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,088</td>
<td class="Message">proxy component[enhanceJava] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,095</td>
<td class="Message">proxy component[reply] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,103</td>
<td class="Message">proxy component[start] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,108</td>
<td class="Message">proxy component[subflow] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:56,115</td>
<td class="Message">proxy component[switch] has been found</td>
<td class="MethodOfCaller">postProcessAfterInitialization</td>
<td class="FileOfCaller">DeclWarpBeanProcess.java</td>
<td class="LineOfCaller">37</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:57,398</td>
<td class="Message">Init Token ignoreAuthUrls Config [ 集合 ]  ：[/airag/app/queryById, /openapi/demo/index, /airag/flow/run, /airag/flow/run/*, /test/jeecgDemo/html, /airag/chat/send, /airag/chat/init, /airag/chat/conversations, /airag/chat/conversation/*, /airag/chat/conversation/update/title, /airag/chat/messages, /airag/chat/messages/clear/*, /airag/chat/upload, /airag/chat/stop/*]</td>
<td class="MethodOfCaller">afterPropertiesSet</td>
<td class="FileOfCaller">IgnoreAuthPostProcessor.java</td>
<td class="LineOfCaller">41</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:57,400</td>
<td class="Message">Init Token ignoreAuthUrls Config [ 耗时 ] ：6毫秒</td>
<td class="MethodOfCaller">afterPropertiesSet</td>
<td class="FileOfCaller">IgnoreAuthPostProcessor.java</td>
<td class="LineOfCaller">49</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:57,418</td>
<td class="Message"> Init CodeGenerate Config [ Get Db Config From application.yml ] </td>
<td class="MethodOfCaller">initCodeGenerateDbConfig</td>
<td class="FileOfCaller">CodeGenerateDbConfig.java</td>
<td class="LineOfCaller">50</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:58,054</td>
<td class="Message">Register ApplicationContext instances org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@5bb3131b</td>
<td class="MethodOfCaller">setApplicationContext</td>
<td class="FileOfCaller">MybatisPlusApplicationContextAware.java</td>
<td class="LineOfCaller">40</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:58,920</td>
<td class="Message">Exposing 3 endpoints beneath base path &#39;/actuator&#39;</td>
<td class="MethodOfCaller">&lt;init&gt;</td>
<td class="FileOfCaller">EndpointLinksResolver.java</td>
<td class="LineOfCaller">60</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,018</td>
<td class="Message">UT026003: Adding annotated server endpoint class org.jeecg.modules.message.websocket.WebSocket for path /websocket/{userId}</td>
<td class="MethodOfCaller">addEndpointInternal</td>
<td class="FileOfCaller">ServerWebSocketContainer.java</td>
<td class="LineOfCaller">647</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,023</td>
<td class="Message">UT026003: Adding annotated server endpoint class org.jeecg.modules.drag.config.websocket.DragChannelWebSocket for path /dragChannelSocket/{token}</td>
<td class="MethodOfCaller">addEndpointInternal</td>
<td class="FileOfCaller">ServerWebSocketContainer.java</td>
<td class="LineOfCaller">647</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,023</td>
<td class="Message">UT026003: Adding annotated server endpoint class org.jeecg.modules.drag.config.websocket.DragWebSocket for path /websocket/drag/{chartId}</td>
<td class="MethodOfCaller">addEndpointInternal</td>
<td class="FileOfCaller">ServerWebSocketContainer.java</td>
<td class="LineOfCaller">647</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,023</td>
<td class="Message">UT026003: Adding annotated server endpoint class org.jeecg.modules.demo.mock.vxe.websocket.VxeSocket for path /vxeSocket/{userId}/{pageId}</td>
<td class="MethodOfCaller">addEndpointInternal</td>
<td class="FileOfCaller">ServerWebSocketContainer.java</td>
<td class="LineOfCaller">647</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,054</td>
<td class="Message">flow info loaded from class config with el,class=com.yomahub.liteflow.parser.sql.SQLXmlELParser</td>
<td class="MethodOfCaller">info</td>
<td class="FileOfCaller">LFLog.java</td>
<td class="LineOfCaller">193</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,077</td>
<td class="Message">query sql: select id, application_name, chain from airag_flow where status = &#39;enable&#39; and chain is not null</td>
<td class="MethodOfCaller">info</td>
<td class="FileOfCaller">LFLog.java</td>
<td class="LineOfCaller">186</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,110</td>
<td class="Message">use dataSourceName[dataSource],has found liteflow config</td>
<td class="MethodOfCaller">getConn</td>
<td class="FileOfCaller">LiteFlowJdbcUtil.java</td>
<td class="LineOfCaller">43</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,321</td>
<td class="Message">starting server: Undertow - 2.3.18.Final</td>
<td class="MethodOfCaller">start</td>
<td class="FileOfCaller">Undertow.java</td>
<td class="LineOfCaller">120</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,326</td>
<td class="Message">XNIO version 3.8.16.Final</td>
<td class="MethodOfCaller">&lt;clinit&gt;</td>
<td class="FileOfCaller">Xnio.java</td>
<td class="LineOfCaller">95</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,334</td>
<td class="Message">XNIO NIO Implementation Version 3.8.16.Final</td>
<td class="MethodOfCaller">&lt;clinit&gt;</td>
<td class="FileOfCaller">NioXnio.java</td>
<td class="LineOfCaller">58</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,355</td>
<td class="Message">JBoss Threads version 3.5.0.Final</td>
<td class="MethodOfCaller">&lt;clinit&gt;</td>
<td class="FileOfCaller">Version.java</td>
<td class="LineOfCaller">55</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,386</td>
<td class="Message">Undertow started on port 8080 (http) with context path &#39;/jeecg-boot&#39;</td>
<td class="MethodOfCaller">start</td>
<td class="FileOfCaller">UndertowWebServer.java</td>
<td class="LineOfCaller">121</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,737</td>
<td class="Message">Will start Quartz Scheduler [MyScheduler] in 1 seconds</td>
<td class="MethodOfCaller">startScheduler</td>
<td class="FileOfCaller">SchedulerFactoryBean.java</td>
<td class="LineOfCaller">735</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,771</td>
<td class="Message">Started JeecgSystemApplication in 13.562 seconds (process running for 14.294)</td>
<td class="MethodOfCaller">logStarted</td>
<td class="FileOfCaller">StartupInfoLogger.java</td>
<td class="LineOfCaller">59</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,775</td>
<td class="Message"> Init Code Generate Template [ 检测如果是JAR启动，Copy模板到config目录 ] </td>
<td class="MethodOfCaller">onApplicationEvent</td>
<td class="FileOfCaller">CodeTemplateInitListener.java</td>
<td class="LineOfCaller">30</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,797</td>
<td class="Message"> Init Code Generate Template completed in 22 ms</td>
<td class="MethodOfCaller">onApplicationEvent</td>
<td class="FileOfCaller">CodeTemplateInitListener.java</td>
<td class="LineOfCaller">33</td>
</tr>

<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 09:47:59,800</td>
<td class="Message">A MeterFilter is being configured after a Meter has been registered to this registry. All MeterFilters should be configured before any Meters are registered. If that is not possible or you have a use case where it should be allowed, let the Micrometer maintainers know at https://github.com/micrometer-metrics/micrometer/issues/4920. Enable DEBUG level logging on this logger to see a stack trace of the call configuring this MeterFilter.</td>
<td class="MethodOfCaller">logWarningAboutLateFilter</td>
<td class="FileOfCaller">MeterRegistry.java</td>
<td class="LineOfCaller">881</td>
</tr>

<tr class="warn even">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 09:47:59,801</td>
<td class="Message">A MeterFilter is being configured after a Meter has been registered to this registry. All MeterFilters should be configured before any Meters are registered. If that is not possible or you have a use case where it should be allowed, let the Micrometer maintainers know at https://github.com/micrometer-metrics/micrometer/issues/4920. Enable DEBUG level logging on this logger to see a stack trace of the call configuring this MeterFilter.</td>
<td class="MethodOfCaller">logWarningAboutLateFilter</td>
<td class="FileOfCaller">MeterRegistry.java</td>
<td class="LineOfCaller">881</td>
</tr>

<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 09:47:59,801</td>
<td class="Message">A MeterFilter is being configured after a Meter has been registered to this registry. All MeterFilters should be configured before any Meters are registered. If that is not possible or you have a use case where it should be allowed, let the Micrometer maintainers know at https://github.com/micrometer-metrics/micrometer/issues/4920. Enable DEBUG level logging on this logger to see a stack trace of the call configuring this MeterFilter.</td>
<td class="MethodOfCaller">logWarningAboutLateFilter</td>
<td class="FileOfCaller">MeterRegistry.java</td>
<td class="LineOfCaller">881</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:47:59,827</td>
<td class="Message">
----------------------------------------------------------
	Application Jeecg-Boot is running! Access URLs:
	Local: 		http://localhost:8080/jeecg-boot
	External: 	http://127.0.0.1:8080/jeecg-boot/doc.html
	Swagger文档: 	http://127.0.0.1:8080/jeecg-boot/doc.html
----------------------------------------------------------</td>
<td class="MethodOfCaller">main</td>
<td class="FileOfCaller">JeecgSystemApplication.java</td>
<td class="LineOfCaller">47</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:48:00,744</td>
<td class="Message">Starting Quartz Scheduler now, after delay of 1 seconds</td>
<td class="MethodOfCaller">lambda$startScheduler$0</td>
<td class="FileOfCaller">SchedulerFactoryBean.java</td>
<td class="LineOfCaller">749</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:48:00,776</td>
<td class="Message">ClusterManager: detected 1 failed or restarted instances.</td>
<td class="MethodOfCaller">logWarnIfNonZero</td>
<td class="FileOfCaller">JobStoreSupport.java</td>
<td class="LineOfCaller">3644</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:48:00,776</td>
<td class="Message">ClusterManager: Scanning for instance &quot;192.168.1.1121755534523220&quot;&#39;s failed in-progress jobs.</td>
<td class="MethodOfCaller">clusterRecover</td>
<td class="FileOfCaller">JobStoreSupport.java</td>
<td class="LineOfCaller">3503</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:48:00,783</td>
<td class="Message">Scheduler MyScheduler_$_MacBook-Air.local1757641674469 started.</td>
<td class="MethodOfCaller">start</td>
<td class="FileOfCaller">QuartzScheduler.java</td>
<td class="LineOfCaller">547</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:48:01,423</td>
<td class="Message">Initializing Spring DispatcherServlet &#39;dispatcherServlet&#39;</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">ServletContextImpl.java</td>
<td class="LineOfCaller">372</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:48:01,424</td>
<td class="Message">Initializing Servlet &#39;dispatcherServlet&#39;</td>
<td class="MethodOfCaller">initServletBean</td>
<td class="FileOfCaller">FrameworkServlet.java</td>
<td class="LineOfCaller">532</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:48:01,426</td>
<td class="Message">Completed initialization in 2 ms</td>
<td class="MethodOfCaller">initServletBean</td>
<td class="FileOfCaller">FrameworkServlet.java</td>
<td class="LineOfCaller">554</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:55:56,539</td>
<td class="Message">获取验证码，Redis key = ee91acfaca6da6bb160a9b81f37129d7xv6s，checkCode = xv6s</td>
<td class="MethodOfCaller">randomImage</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">554</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,496</td>
<td class="Message"> 登录接口用户的租户ID = 0</td>
<td class="MethodOfCaller">setLoginTenant</td>
<td class="FileOfCaller">SysUserServiceImpl.java</td>
<td class="LineOfCaller">982</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,623</td>
<td class="Message">加密操作，Aspect程序耗时：12ms</td>
<td class="MethodOfCaller">around</td>
<td class="FileOfCaller">SensitiveDataAspect.java</td>
<td class="LineOfCaller">76</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,644</td>
<td class="Message">1 获取用户信息耗时（用户基础信息）5毫秒</td>
<td class="MethodOfCaller">getUserInfo</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">150</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,675</td>
<td class="Message">2 获取用户信息耗时 (首页面配置)36毫秒</td>
<td class="MethodOfCaller">getUserInfo</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">165</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,676</td>
<td class="Message">&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">165</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,692</td>
<td class="Message">      &gt;&gt;&gt; 1 获取系统字典项耗时（SQL）：16毫秒</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">184</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,729</td>
<td class="Message">      &gt;&gt;&gt; 2 获取系统字典项耗时（Enum）：53毫秒</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">188</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,730</td>
<td class="Message">      &gt;&gt;&gt; end 获取系统字典库总耗时：54毫秒</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">190</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,730</td>
<td class="Message">&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">191</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,730</td>
<td class="Message">3 获取用户信息耗时 (字典数据)91毫秒</td>
<td class="MethodOfCaller">getUserInfo</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">169</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:08,730</td>
<td class="Message">end 获取用户信息耗时 91毫秒</td>
<td class="MethodOfCaller">getUserInfo</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">174</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:11,655</td>
<td class="Message">-----查询近两个月收到的未读通知-----，近2月的第一天：2025-08-01 00:00:00</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">388</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:11,693</td>
<td class="Message">begin 获取用户近2个月的系统公告 (通知)44毫秒</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">403</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:11,704</td>
<td class="Message">end 获取用户2个月的系统公告 (系统消息)55毫秒</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">411</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:36,706</td>
<td class="Message"> path = /online/cgform/head/list</td>
<td class="MethodOfCaller">getOnlinePossiblePaths</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1805</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:36,707</td>
<td class="Message">获取的菜单地址= [/online/cgform/head/list]</td>
<td class="MethodOfCaller">queryPermissionDataRule</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">201</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:36,745</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:43,286</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,402</td>
<td class="Message"> path = /online/cgreport/api/getColumnsAndData/1256627801873821698</td>
<td class="MethodOfCaller">getOnlinePossiblePaths</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1805</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,403</td>
<td class="Message">获取的菜单地址= [/online/cgreport/api/getColumnsAndData/1256627801873821698]</td>
<td class="MethodOfCaller">queryPermissionDataRule</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">201</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,442</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;sys_log&#39;, alias=&#39;sys_log&#39;, fields=[count(*), date_format(create_time, &#39;%y-%m-%d&#39;)], all=false}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,462</td>
<td class="Message">报表查询sql=&gt;
select * from (select DATE_FORMAT(create_time,  &#39;%Y-%m-%d&#39;) as date,count(*) as num from sys_log group by DATE_FORMAT(create_time, &#39;%Y-%m-%d&#39;)) jeecg_rp_temp </td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">202</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,462</td>
<td class="Message">报表查询sqlParam=&gt;
{}</td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">203</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,643</td>
<td class="Message"> path = /online/cgreport/api/getColumnsAndData/1256627801873821698</td>
<td class="MethodOfCaller">getOnlinePossiblePaths</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1805</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,643</td>
<td class="Message">获取的菜单地址= [/online/cgreport/api/getColumnsAndData/1256627801873821698]</td>
<td class="MethodOfCaller">queryPermissionDataRule</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">201</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,671</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;sys_log&#39;, alias=&#39;sys_log&#39;, fields=[count(*), date_format(create_time, &#39;%y-%m-%d&#39;)], all=false}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,678</td>
<td class="Message">报表查询sql=&gt;
select * from (select DATE_FORMAT(create_time,  &#39;%Y-%m-%d&#39;) as date,count(*) as num from sys_log group by DATE_FORMAT(create_time, &#39;%Y-%m-%d&#39;)) jeecg_rp_temp </td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">202</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:56:57,679</td>
<td class="Message">报表查询sqlParam=&gt;
{}</td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">203</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:03,735</td>
<td class="Message">-------通过数据库读取用户拥有的角色Rules------username： admin,Roles size: 2</td>
<td class="MethodOfCaller">getUserRoleSet</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1125</td>
</tr>

<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 09:57:06,760</td>
<td class="Message">No static resource bigscreen/template1/css/images/blank.gif.</td>
<td class="MethodOfCaller">handleException</td>
<td class="FileOfCaller">JeecgBootExceptionHandler.java</td>
<td class="LineOfCaller">124</td>
</tr>
<tr><td class="Exception" colspan="6">org.springframework.web.servlet.resource.NoResourceFoundException: No static resource bigscreen/template1/css/images/blank.gif.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.resource.ResourceHttpRequestHandler.handleRequest(ResourceHttpRequestHandler.java:585)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:52)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:527)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.websockets.jsr.JsrWebSocketFilter.doFilter(JsrWebSocketFilter.java:172)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:91)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.resource.ResourceUrlEncodingFilter.doFilter(ResourceUrlEncodingFilter.java:66)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.support.jakarta.WebStatFilter.doFilter(WebStatFilter.java:73)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.boot.actuate.web.exchanges.servlet.HttpExchangesFilter.doFilterInternal(HttpExchangesFilter.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:65)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:109)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:138)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:70)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:109)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:138)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:70)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:463)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AbstractShiroFilter.lambda$doFilterInternal$0(AbstractShiroFilter.java:378)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:91)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:84)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:389)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:376)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.ServerHttpObservationFilter.doFilterInternal(ServerHttpObservationFilter.java:114)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:276)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:256)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler.handleRequest(ServletInitialHandler.java:176)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jeecg.modules.monitor.actuator.undertow.CustomUndertowMetricsHandler.lambda$4(CustomUndertowMetricsHandler.java:87)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.Connectors.executeRootHandler(Connectors.java:395)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:861)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2513)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1538)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1282)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.Thread.run(Thread.java:840)
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 09:57:06,762</td>
<td class="Message">No static resource bigscreen/template1/css/images/panel_tools.png.</td>
<td class="MethodOfCaller">handleException</td>
<td class="FileOfCaller">JeecgBootExceptionHandler.java</td>
<td class="LineOfCaller">124</td>
</tr>
<tr><td class="Exception" colspan="6">org.springframework.web.servlet.resource.NoResourceFoundException: No static resource bigscreen/template1/css/images/panel_tools.png.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.resource.ResourceHttpRequestHandler.handleRequest(ResourceHttpRequestHandler.java:585)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:52)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:527)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:614)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.websockets.jsr.JsrWebSocketFilter.doFilter(JsrWebSocketFilter.java:172)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:91)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.servlet.resource.ResourceUrlEncodingFilter.doFilter(ResourceUrlEncodingFilter.java:66)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.support.jakarta.WebStatFilter.doFilter(WebStatFilter.java:73)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.boot.actuate.web.exchanges.servlet.HttpExchangesFilter.doFilterInternal(HttpExchangesFilter.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:65)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:109)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:138)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:70)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:109)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:138)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:70)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:463)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AbstractShiroFilter.lambda$doFilterInternal$0(AbstractShiroFilter.java:378)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:91)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:84)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:389)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:376)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.ServerHttpObservationFilter.doFilterInternal(ServerHttpObservationFilter.java:114)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:276)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:256)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.servlet.handlers.ServletInitialHandler.handleRequest(ServletInitialHandler.java:176)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jeecg.modules.monitor.actuator.undertow.CustomUndertowMetricsHandler.lambda$4(CustomUndertowMetricsHandler.java:87)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.Connectors.executeRootHandler(Connectors.java:395)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:861)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2513)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1538)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1282)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.Thread.run(Thread.java:840)
</td></tr>
<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,278</td>
<td class="Message"> path = /online/cgreport/api/getColumnsAndData/1590154651759259649</td>
<td class="MethodOfCaller">getOnlinePossiblePaths</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1805</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,279</td>
<td class="Message">获取的菜单地址= [/online/cgreport/api/getColumnsAndData/1590154651759259649]</td>
<td class="MethodOfCaller">queryPermissionDataRule</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">201</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,306</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;demo&#39;, alias=&#39;demo&#39;, fields=[], all=true}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,319</td>
<td class="Message">报表查询sql=&gt;
select * from (select * from demo where sex = #{param._sql_param_sex}) jeecg_rp_temp </td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">202</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,319</td>
<td class="Message">报表查询sqlParam=&gt;
{_sql_param_sex=2}</td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">203</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,498</td>
<td class="Message"> path = /online/cgreport/api/getColumnsAndData/1590154651759259649?sex=1</td>
<td class="MethodOfCaller">getOnlinePossiblePaths</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1805</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,499</td>
<td class="Message">获取的菜单地址= [/online/cgreport/api/getColumnsAndData/1590154651759259649?sex=1]</td>
<td class="MethodOfCaller">queryPermissionDataRule</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">201</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,523</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;demo&#39;, alias=&#39;demo&#39;, fields=[], all=true}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,537</td>
<td class="Message">报表查询sql=&gt;
select * from (select * from demo where sex = #{param._sql_param_sex}) jeecg_rp_temp </td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">202</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:27,537</td>
<td class="Message">报表查询sqlParam=&gt;
{_sql_param_sex=1}</td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">203</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:49,882</td>
<td class="Message"> path = /online/cgreport/api/getColumnsAndData/1256627801873821698</td>
<td class="MethodOfCaller">getOnlinePossiblePaths</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1805</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:49,884</td>
<td class="Message">获取的菜单地址= [/online/cgreport/api/getColumnsAndData/1256627801873821698]</td>
<td class="MethodOfCaller">queryPermissionDataRule</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">201</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:49,915</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;sys_log&#39;, alias=&#39;sys_log&#39;, fields=[count(*), date_format(create_time, &#39;%y-%m-%d&#39;)], all=false}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:49,925</td>
<td class="Message">报表查询sql=&gt;
select * from (select DATE_FORMAT(create_time,  &#39;%Y-%m-%d&#39;) as date,count(*) as num from sys_log group by DATE_FORMAT(create_time, &#39;%Y-%m-%d&#39;)) jeecg_rp_temp </td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">202</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:49,925</td>
<td class="Message">报表查询sqlParam=&gt;
{}</td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">203</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:50,032</td>
<td class="Message"> path = /online/cgreport/api/getColumnsAndData/1256627801873821698</td>
<td class="MethodOfCaller">getOnlinePossiblePaths</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1805</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:50,032</td>
<td class="Message">获取的菜单地址= [/online/cgreport/api/getColumnsAndData/1256627801873821698]</td>
<td class="MethodOfCaller">queryPermissionDataRule</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">201</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:50,055</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;sys_log&#39;, alias=&#39;sys_log&#39;, fields=[count(*), date_format(create_time, &#39;%y-%m-%d&#39;)], all=false}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:50,062</td>
<td class="Message">报表查询sql=&gt;
select * from (select DATE_FORMAT(create_time,  &#39;%Y-%m-%d&#39;) as date,count(*) as num from sys_log group by DATE_FORMAT(create_time, &#39;%Y-%m-%d&#39;)) jeecg_rp_temp </td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">202</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:50,062</td>
<td class="Message">报表查询sqlParam=&gt;
{}</td>
<td class="MethodOfCaller">executeSelectSql</td>
<td class="FileOfCaller">OnlCgreportHeadServiceImpl.java</td>
<td class="LineOfCaller">203</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:52,484</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:53,396</td>
<td class="Message"> path = /online/cgform/head/list</td>
<td class="MethodOfCaller">getOnlinePossiblePaths</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1805</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:53,396</td>
<td class="Message">获取的菜单地址= [/online/cgform/head/list]</td>
<td class="MethodOfCaller">queryPermissionDataRule</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">201</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:57:53,412</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:58:13,774</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:58:13,790</td>
<td class="Message">字典拼接的查询SQL：select realname,username from sys_user</td>
<td class="MethodOfCaller">isPassByDict</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">127</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:58:13,794</td>
<td class="Message">获取select sql信息 ：{sys_user=SelectSqlInfo{fromTableName=&#39;sys_user&#39;, fromSubSelect=null, aliasName=&#39;null&#39;, selectFields=[realname, username], realSelectFields=[realname, username], selectAll=false}} </td>
<td class="MethodOfCaller">isPassBySql</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">76</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:58:13,805</td>
<td class="Message">表字典白名单初始化完成：{sys_permission=id,name, sys_position=name,id, onl_drag_comp=id,comp_name, test_shoptype_tree=type_name,id, sys_dict=dict_code, airag_flow=name,id, oa_officialdoc_organcode=id,organ_name, demo=id,name, tj_user_report=name,username, sys_role=role_name,role_code, design_form=id,desform_name,desform_code, ces_shop_type=name,pid,id,has_child, sys_depart=id,org_code,depart_name, sys_user=phone,work_no,id,email,realname,username, onl_cgreport_head=code, sys_data_source=code,name, wu_liao=wul_name,id, sys_sms_template=template_code, sys_category=id,name, onl_cgform_head=table_txt,table_name, oa_wps_file=id,name, sys_tenant=name,id, airag_model=name,id}</td>
<td class="MethodOfCaller">init</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">59</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:58:13,805</td>
<td class="Message">checkWhiteList tableName: sys_user</td>
<td class="MethodOfCaller">checkWhiteList</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">156</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:58:13,805</td>
<td class="Message">白名单校验：查询表&quot;sys_user&quot;，查询字段 [realname, username] 通过校验</td>
<td class="MethodOfCaller">checkWhiteList</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">195</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 09:58:13,805</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;sys_user&#39;, alias=&#39;&#39;, fields=[realname, username], all=false}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:00:18,781</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:01:31,587</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:01:46,112</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:01:50,472</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:01:55,741</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:01:59,524</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:02:34,684</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:02:38,397</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:02:44,999</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:02:52,552</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:02:59,264</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:19:46,608</td>
<td class="Message">-----查询近两个月收到的未读通知-----，近2月的第一天：2025-08-01 00:00:00</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">388</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:19:46,620</td>
<td class="Message">begin 获取用户近2个月的系统公告 (通知)13毫秒</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">403</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:19:46,630</td>
<td class="Message">end 获取用户2个月的系统公告 (系统消息)23毫秒</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">411</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:19:50,237</td>
<td class="Message">-----查询近两个月收到的未读通知-----，近2月的第一天：2025-08-01 00:00:00</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">388</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:19:50,244</td>
<td class="Message">begin 获取用户近2个月的系统公告 (通知)7毫秒</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">403</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:19:50,259</td>
<td class="Message">end 获取用户2个月的系统公告 (系统消息)22毫秒</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">411</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:19:55,276</td>
<td class="Message">获取验证码，Redis key = 63f697a328b2f5d719e18fda61424a853yfr，checkCode = 3yfr</td>
<td class="MethodOfCaller">randomImage</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">554</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:03,995</td>
<td class="Message"> 登录接口用户的租户ID = 0</td>
<td class="MethodOfCaller">setLoginTenant</td>
<td class="FileOfCaller">SysUserServiceImpl.java</td>
<td class="LineOfCaller">982</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,021</td>
<td class="Message">1 获取用户信息耗时（用户基础信息）3毫秒</td>
<td class="MethodOfCaller">getUserInfo</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">150</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,033</td>
<td class="Message">2 获取用户信息耗时 (首页面配置)15毫秒</td>
<td class="MethodOfCaller">getUserInfo</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">165</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,034</td>
<td class="Message">&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">165</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,040</td>
<td class="Message">      &gt;&gt;&gt; 1 获取系统字典项耗时（SQL）：6毫秒</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">184</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,040</td>
<td class="Message">      &gt;&gt;&gt; 2 获取系统字典项耗时（Enum）：6毫秒</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">188</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,040</td>
<td class="Message">      &gt;&gt;&gt; end 获取系统字典库总耗时：6毫秒</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">190</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,040</td>
<td class="Message">&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;</td>
<td class="MethodOfCaller">queryAllDictItems</td>
<td class="FileOfCaller">SysDictServiceImpl.java</td>
<td class="LineOfCaller">191</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,041</td>
<td class="Message">3 获取用户信息耗时 (字典数据)23毫秒</td>
<td class="MethodOfCaller">getUserInfo</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">169</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,041</td>
<td class="Message">end 获取用户信息耗时 23毫秒</td>
<td class="MethodOfCaller">getUserInfo</td>
<td class="FileOfCaller">LoginController.java</td>
<td class="LineOfCaller">174</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,778</td>
<td class="Message">-----查询近两个月收到的未读通知-----，近2月的第一天：2025-08-01 00:00:00</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">388</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,790</td>
<td class="Message">begin 获取用户近2个月的系统公告 (通知)12毫秒</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">403</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:04,801</td>
<td class="Message">end 获取用户2个月的系统公告 (系统消息)23毫秒</td>
<td class="MethodOfCaller">listByUser</td>
<td class="FileOfCaller">SysAnnouncementController.java</td>
<td class="LineOfCaller">411</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:46,075</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:56,860</td>
<td class="Message">-------通过数据库读取用户拥有的角色Rules------useId： e9ca23d68d884d4ebb19d07889727dae,Roles size: 2</td>
<td class="MethodOfCaller">getUserRoleSetById</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1139</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:56,887</td>
<td class="Message">-------通过数据库读取用户拥有的权限Perms------userId： e9ca23d68d884d4ebb19d07889727dae,Perms size: 168</td>
<td class="MethodOfCaller">getUserPermissionSet</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1170</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:56,887</td>
<td class="Message">===============Shiro权限认证成功==============</td>
<td class="MethodOfCaller">doGetAuthorizationInfo</td>
<td class="FileOfCaller">ShiroRealm.java</td>
<td class="LineOfCaller">86</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:58,796</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:58,831</td>
<td class="Message">字典拼接的查询SQL：select name,id from sys_position</td>
<td class="MethodOfCaller">isPassByDict</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">127</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:58,833</td>
<td class="Message">获取select sql信息 ：{sys_position=SelectSqlInfo{fromTableName=&#39;sys_position&#39;, fromSubSelect=null, aliasName=&#39;null&#39;, selectFields=[name, id], realSelectFields=[name, id], selectAll=false}} </td>
<td class="MethodOfCaller">isPassBySql</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">76</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:58,838</td>
<td class="Message">表字典白名单初始化完成：{sys_permission=id,name, sys_position=name,id, onl_drag_comp=id,comp_name, test_shoptype_tree=type_name,id, sys_dict=dict_code, airag_flow=name,id, oa_officialdoc_organcode=id,organ_name, demo=id,name, tj_user_report=name,username, sys_role=role_name,role_code, design_form=id,desform_name,desform_code, ces_shop_type=name,pid,id,has_child, sys_depart=id,org_code,depart_name, sys_user=phone,work_no,id,email,realname,username, onl_cgreport_head=code, sys_data_source=code,name, wu_liao=wul_name,id, sys_sms_template=template_code, sys_category=id,name, onl_cgform_head=table_txt,table_name, oa_wps_file=id,name, sys_tenant=name,id, airag_model=name,id}</td>
<td class="MethodOfCaller">init</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">59</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:58,838</td>
<td class="Message">checkWhiteList tableName: sys_position</td>
<td class="MethodOfCaller">checkWhiteList</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">156</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:58,838</td>
<td class="Message">白名单校验：查询表&quot;sys_position&quot;，查询字段 [name, id] 通过校验</td>
<td class="MethodOfCaller">checkWhiteList</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">195</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:20:58,838</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;sys_position&#39;, alias=&#39;&#39;, fields=[name, id], all=false}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:01,090</td>
<td class="Message">单字段排序规则&gt;&gt; column:id,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:09,344</td>
<td class="Message">======获取全部菜单数据=====耗时:22毫秒</td>
<td class="MethodOfCaller">list</td>
<td class="FileOfCaller">SysPermissionController.java</td>
<td class="LineOfCaller">114</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:15,046</td>
<td class="Message">单字段排序规则&gt;&gt; column:id,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:25,054</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:26,968</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:26,984</td>
<td class="Message">字典拼接的查询SQL：select realname,username from sys_user</td>
<td class="MethodOfCaller">isPassByDict</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">127</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:26,986</td>
<td class="Message">获取select sql信息 ：{sys_user=SelectSqlInfo{fromTableName=&#39;sys_user&#39;, fromSubSelect=null, aliasName=&#39;null&#39;, selectFields=[realname, username], realSelectFields=[realname, username], selectAll=false}} </td>
<td class="MethodOfCaller">isPassBySql</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">76</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:26,990</td>
<td class="Message">表字典白名单初始化完成：{sys_permission=id,name, sys_position=name,id, onl_drag_comp=id,comp_name, test_shoptype_tree=type_name,id, sys_dict=dict_code, airag_flow=name,id, oa_officialdoc_organcode=id,organ_name, demo=id,name, tj_user_report=name,username, sys_role=role_name,role_code, design_form=id,desform_name,desform_code, ces_shop_type=name,pid,id,has_child, sys_depart=id,org_code,depart_name, sys_user=phone,work_no,id,email,realname,username, onl_cgreport_head=code, sys_data_source=code,name, wu_liao=wul_name,id, sys_sms_template=template_code, sys_category=id,name, onl_cgform_head=table_txt,table_name, oa_wps_file=id,name, sys_tenant=name,id, airag_model=name,id}</td>
<td class="MethodOfCaller">init</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">59</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:26,990</td>
<td class="Message">checkWhiteList tableName: sys_user</td>
<td class="MethodOfCaller">checkWhiteList</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">156</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:26,990</td>
<td class="Message">白名单校验：查询表&quot;sys_user&quot;，查询字段 [realname, username] 通过校验</td>
<td class="MethodOfCaller">checkWhiteList</td>
<td class="FileOfCaller">DictTableWhiteListHandlerImpl.java</td>
<td class="LineOfCaller">195</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:26,990</td>
<td class="Message">  获取sql信息 ：[QueryTable{name=&#39;sys_user&#39;, alias=&#39;&#39;, fields=[realname, username], all=false}] </td>
<td class="MethodOfCaller">isPass</td>
<td class="FileOfCaller">AbstractQueryBlackListHandler.java</td>
<td class="LineOfCaller">66</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:29,717</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:30,971</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:31,768</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:44,348</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:21:47,073</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:22:37,895</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:22:38,578</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:22:39,400</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:23:06,539</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:23:09,981</td>
<td class="Message">单字段排序规则&gt;&gt; column:createTime,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:23:13,103</td>
<td class="Message">单字段排序规则&gt;&gt; column:id,排序方式:desc</td>
<td class="MethodOfCaller">doMultiFieldsOrder</td>
<td class="FileOfCaller">QueryGenerator.java</td>
<td class="LineOfCaller">263</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:23:13,706</td>
<td class="Message">======获取全部菜单数据=====耗时:14毫秒</td>
<td class="MethodOfCaller">list</td>
<td class="FileOfCaller">SysPermissionController.java</td>
<td class="LineOfCaller">114</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:23:15,927</td>
<td class="Message">-------通过数据库读取用户拥有的角色Rules------username： admin,Roles size: 2</td>
<td class="MethodOfCaller">getUserRoleSet</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1125</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:23:59,036</td>
<td class="Message">-------通过数据库读取用户拥有的角色Rules------username： admin,Roles size: 2</td>
<td class="MethodOfCaller">getUserRoleSet</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1125</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:24:02,991</td>
<td class="Message">-------通过数据库读取用户拥有的角色Rules------username： admin,Roles size: 2</td>
<td class="MethodOfCaller">getUserRoleSet</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1125</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:24:06,337</td>
<td class="Message">-------通过数据库读取用户拥有的角色Rules------username： admin,Roles size: 2</td>
<td class="MethodOfCaller">getUserRoleSet</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1125</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:24:26,023</td>
<td class="Message">-------通过数据库读取用户拥有的角色Rules------username： admin,Roles size: 2</td>
<td class="MethodOfCaller">getUserRoleSet</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1125</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:24:30,274</td>
<td class="Message">-------通过数据库读取用户拥有的角色Rules------username： admin,Roles size: 2</td>
<td class="MethodOfCaller">getUserRoleSet</td>
<td class="FileOfCaller">SysBaseApiImpl.java</td>
<td class="LineOfCaller">1125</td>
</tr>

<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:39,170</td>
<td class="Message">{conn-10004} discard</td>
<td class="MethodOfCaller">handleFatalError</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">1685</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet successfully received from the server was 7,173 milliseconds ago. The last packet sent successfully to the server was 7,174 milliseconds ago.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2045)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidStatementConnection.setAutoCommit(DruidStatementConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:715)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.logging.LogFilter.connection_setAutoCommit(LogFilter.java:473)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_setAutoCommit(FilterAdapter.java:964)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.setAutoCommit(ConnectionProxyImpl.java:416)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:732)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.setAutoCommit(AttributeRestoringConnectionInvocationHandler.java:98)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.invoke(AttributeRestoringConnectionInvocationHandler.java:66)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.proxy2/jdk.proxy2.$Proxy377.setAutoCommit(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreCMT.getNonManagedTXConnection(JobStoreCMT.java:191)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3246)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.manage(JobStoreSupport.java:4012)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.run(JobStoreSupport.java:4033)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet successfully received from the server was 7,173 milliseconds ago. The last packet sent successfully to the server was 7,174 milliseconds ago.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:520)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:700)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:987)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:933)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.execSQL(NativeSession.java:664)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2035)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
<br />Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeaderLocal(SimplePacketReader.java:81)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:514)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 21 common frames omitted
</td></tr>
<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:28:39,173</td>
<td class="Message">Failed to override connection auto commit/transaction isolation.</td>
<td class="MethodOfCaller">getNonManagedTXConnection</td>
<td class="FileOfCaller">JobStoreCMT.java</td>
<td class="LineOfCaller">198</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet successfully received from the server was 7,173 milliseconds ago. The last packet sent successfully to the server was 7,174 milliseconds ago.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2045)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidStatementConnection.setAutoCommit(DruidStatementConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:715)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.logging.LogFilter.connection_setAutoCommit(LogFilter.java:473)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_setAutoCommit(FilterAdapter.java:964)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.setAutoCommit(ConnectionProxyImpl.java:416)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:732)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.setAutoCommit(AttributeRestoringConnectionInvocationHandler.java:98)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.invoke(AttributeRestoringConnectionInvocationHandler.java:66)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.proxy2/jdk.proxy2.$Proxy377.setAutoCommit(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreCMT.getNonManagedTXConnection(JobStoreCMT.java:191)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3246)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.manage(JobStoreSupport.java:4012)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.run(JobStoreSupport.java:4033)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet successfully received from the server was 7,173 milliseconds ago. The last packet sent successfully to the server was 7,174 milliseconds ago.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:520)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:700)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:987)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:933)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.execSQL(NativeSession.java:664)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2035)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
<br />Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeaderLocal(SimplePacketReader.java:81)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:514)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 21 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:39,174</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:28:39,175</td>
<td class="Message">Failed restore connection&#39;s original auto commit setting.</td>
<td class="MethodOfCaller">restoreOriginalAtributes</td>
<td class="FileOfCaller">AttributeRestoringConnectionInvocationHandler.java</td>
<td class="LineOfCaller">144</td>
</tr>
<tr><td class="Exception" colspan="6">java.sql.SQLException: connection disabled
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.checkStateInternal(DruidPooledConnection.java:1184)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.checkState(DruidPooledConnection.java:1169)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:721)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.restoreOriginalAtributes(AttributeRestoringConnectionInvocationHandler.java:141)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.cleanupConnection(JobStoreSupport.java:3677)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3283)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.manage(JobStoreSupport.java:4012)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.run(JobStoreSupport.java:4033)
<br />Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet successfully received from the server was 7,173 milliseconds ago. The last packet sent successfully to the server was 7,174 milliseconds ago.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2045)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidStatementConnection.setAutoCommit(DruidStatementConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:715)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.logging.LogFilter.connection_setAutoCommit(LogFilter.java:473)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_setAutoCommit(FilterAdapter.java:964)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.setAutoCommit(ConnectionProxyImpl.java:416)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:732)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.setAutoCommit(AttributeRestoringConnectionInvocationHandler.java:98)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.invoke(AttributeRestoringConnectionInvocationHandler.java:66)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.proxy2/jdk.proxy2.$Proxy377.setAutoCommit(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreCMT.getNonManagedTXConnection(JobStoreCMT.java:191)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3246)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 2 common frames omitted
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet successfully received from the server was 7,173 milliseconds ago. The last packet sent successfully to the server was 7,174 milliseconds ago.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:520)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:700)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:987)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:933)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.execSQL(NativeSession.java:664)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2035)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
<br />Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeaderLocal(SimplePacketReader.java:81)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:514)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 21 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:39,175</td>
<td class="Message">MisfireHandler: Error handling misfires: Database error recovering from misfires.</td>
<td class="MethodOfCaller">manage</td>
<td class="FileOfCaller">JobStoreSupport.java</td>
<td class="LineOfCaller">4017</td>
</tr>
<tr><td class="Exception" colspan="6">org.quartz.JobPersistenceException: Database error recovering from misfires.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3274)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.manage(JobStoreSupport.java:4012)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$MisfireHandler.run(JobStoreSupport.java:4033)
<br />Caused by: java.sql.SQLException: connection disabled
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.checkStateInternal(DruidPooledConnection.java:1184)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.checkState(DruidPooledConnection.java:1169)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.prepareStatement(DruidPooledConnection.java:356)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedMethodAccessor75.invoke(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Method.invoke(Method.java:569)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.invoke(AttributeRestoringConnectionInvocationHandler.java:73)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.proxy2/jdk.proxy2.$Proxy377.prepareStatement(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.StdJDBCDelegate.countMisfiredTriggersInState(StdJDBCDelegate.java:390)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3253)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 2 common frames omitted
<br />Caused by: com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet successfully received from the server was 7,173 milliseconds ago. The last packet sent successfully to the server was 7,174 milliseconds ago.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2045)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidStatementConnection.setAutoCommit(DruidStatementConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:715)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.logging.LogFilter.connection_setAutoCommit(LogFilter.java:473)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_setAutoCommit(FilterAdapter.java:964)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_setAutoCommit(FilterChainImpl.java:710)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl.setAutoCommit(ConnectionProxyImpl.java:416)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidPooledConnection.setAutoCommit(DruidPooledConnection.java:732)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.setAutoCommit(AttributeRestoringConnectionInvocationHandler.java:98)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.AttributeRestoringConnectionInvocationHandler.invoke(AttributeRestoringConnectionInvocationHandler.java:66)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.proxy2/jdk.proxy2.$Proxy377.setAutoCommit(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreCMT.getNonManagedTXConnection(JobStoreCMT.java:191)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.doRecoverMisfires(JobStoreSupport.java:3246)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 2 common frames omitted
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet successfully received from the server was 7,173 milliseconds ago. The last packet sent successfully to the server was 7,174 milliseconds ago.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:520)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:700)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:987)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.sendQueryString(NativeProtocol.java:933)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.execSQL(NativeSession.java:664)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:2035)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
<br />Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.FullReadInputStream.readFully(FullReadInputStream.java:67)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeaderLocal(SimplePacketReader.java:81)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:41)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:54)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:514)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 21 common frames omitted
</td></tr>
<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:28:39,221</td>
<td class="Message">Reconnecting, last destination was /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:28:39,222</td>
<td class="Message">Reconnecting, last destination was /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:28:39,227</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="warn even">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:28:39,227</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:46,920</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:28:46,922</td>
<td class="Message">{dataSource-1} failContinuous is true</td>
<td class="MethodOfCaller">setFailContinuous</td>
<td class="FileOfCaller">DruidAbstractDataSource.java</td>
<td class="LineOfCaller">1900</td>
</tr>

<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:47,431</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:47,942</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:28:48,219</td>
<td class="Message">Reconnecting, last destination was 127.0.0.1/&lt;unresolved&gt;:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:28:48,219</td>
<td class="Message">Reconnecting, last destination was 127.0.0.1/&lt;unresolved&gt;:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:28:48,222</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="warn even">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:28:48,222</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:48,452</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:48,959</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:49,467</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:49,977</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:50,487</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:50,992</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:51,507</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:52,016</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:52,523</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:53,033</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:53,540</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:54,048</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:54,559</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:55,067</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:55,576</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:56,083</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:28:56,514</td>
<td class="Message">Reconnecting, last destination was 127.0.0.1/&lt;unresolved&gt;:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:28:56,514</td>
<td class="Message">Reconnecting, last destination was 127.0.0.1/&lt;unresolved&gt;:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:28:56,517</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="warn even">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:28:56,517</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:56,593</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:57,099</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:57,607</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:58,116</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:58,626</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:59,131</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:28:59,640</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:00,147</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:00,654</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:01,159</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:01,669</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:02,175</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:02,682</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:03,187</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:03,695</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:04,203</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:04,713</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:05,221</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:05,730</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:06,234</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:06,741</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:07,250</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:07,759</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:08,266</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:08,770</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:09,277</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:09,785</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:10,293</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:10,795</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:11,304</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:11,814</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:12,319</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:12,824</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:29:12,918</td>
<td class="Message">Reconnecting, last destination was 127.0.0.1/&lt;unresolved&gt;:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:29:12,918</td>
<td class="Message">Reconnecting, last destination was 127.0.0.1/&lt;unresolved&gt;:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="warn even">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:29:12,921</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:29:12,921</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:13,332</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:13,839</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:14,347</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:14,853</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:15,360</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:15,869</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:16,380</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:16,887</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:17,392</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:17,899</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:18,403</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:18,913</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:19,417</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:19,925</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:20,435</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:20,941</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:21,452</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:21,958</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:22,468</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:22,973</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:23,483</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:23,991</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:24,497</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:25,007</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:25,514</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:26,020</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:26,525</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:27,034</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:27,542</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:28,051</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:28,558</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:29,067</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:29,576</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:30,085</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:30,591</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:31,099</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:31,609</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:32,118</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:32,625</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:33,133</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:33,642</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:34,150</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:34,659</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:35,169</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:35,679</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:36,185</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:36,695</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:37,202</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:37,709</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:38,219</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:38,726</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:39,230</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:39,739</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:40,248</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:40,756</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:41,267</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:41,777</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:42,283</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:42,792</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="info even">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:29:43,017</td>
<td class="Message">Reconnecting, last destination was 127.0.0.1/&lt;unresolved&gt;:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="info odd">
<td class="Level">INFO</td>
<td class="Date">2025-09-12 10:29:43,017</td>
<td class="Message">Reconnecting, last destination was 127.0.0.1/&lt;unresolved&gt;:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">171</td>
</tr>

<tr class="warn odd">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:29:43,020</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="warn even">
<td class="Level">WARN</td>
<td class="Date">2025-09-12 10:29:43,020</td>
<td class="Message">Cannot reconnect to [127.0.0.1/&lt;unresolved&gt;:6379]: Connection refused: /127.0.0.1:6379</td>
<td class="MethodOfCaller">log</td>
<td class="FileOfCaller">AbstractInternalLogger.java</td>
<td class="LineOfCaller">151</td>
</tr>

<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:43,300</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:43,807</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:44,312</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:44,814</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:45,321</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:45,830</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:46,339</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:46,850</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:46,933</td>
<td class="Message">ClusterManager: Error managing cluster: Failed to obtain DB connection from data source &#39;springNonTxDataSource.MyScheduler&#39;: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60002, active 2, maxActive 1000, creating 0, createErrorCount 120</td>
<td class="MethodOfCaller">manage</td>
<td class="FileOfCaller">JobStoreSupport.java</td>
<td class="LineOfCaller">3941</td>
</tr>
<tr><td class="Exception" colspan="6">org.quartz.JobPersistenceException: Failed to obtain DB connection from data source &#39;springNonTxDataSource.MyScheduler&#39;: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60002, active 2, maxActive 1000, creating 0, createErrorCount 120
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreCMT.getNonManagedTXConnection(JobStoreCMT.java:168)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.doCheckin(JobStoreSupport.java:3322)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$ClusterManager.manage(JobStoreSupport.java:3935)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport$ClusterManager.run(JobStoreSupport.java:3972)
<br />Caused by: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60002, active 2, maxActive 1000, creating 0, createErrorCount 120
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:1178)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5074)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.logging.LogFilter.dataSource_getConnection(LogFilter.java:915)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5070)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.dataSource_getConnection(StatFilter.java:724)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5070)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1139)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:80)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.baomidou.dynamic.datasource.ds.ItemDataSource.getConnection(ItemDataSource.java:55)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.baomidou.dynamic.datasource.ds.AbstractRoutingDataSource.getConnection(AbstractRoutingDataSource.java:54)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.scheduling.quartz.LocalDataSourceJobStore$2.getConnection(LocalDataSourceJobStore.java:142)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.utils.DBConnectionManager.getConnection(DBConnectionManager.java:108)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreCMT.getNonManagedTXConnection(JobStoreCMT.java:165)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 3 common frames omitted
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:47,356</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:47,862</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:48,370</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:48,876</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:49,378</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:49,887</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:50,391</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:50,893</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:51,403</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:51,913</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:52,418</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:52,928</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:53,437</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:53,942</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:54,449</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:54,956</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:55,462</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:55,971</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:56,481</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:56,991</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:57,500</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:58,005</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:58,361</td>
<td class="Message">An error occurred while scanning for the next triggers to fire.</td>
<td class="MethodOfCaller">schedulerError</td>
<td class="FileOfCaller">QuartzScheduler.java</td>
<td class="LineOfCaller">2407</td>
</tr>
<tr><td class="Exception" colspan="6">org.quartz.JobPersistenceException: Failed to obtain DB connection from data source &#39;springNonTxDataSource.MyScheduler&#39;: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60003, active 2, maxActive 1000, creating 0, createErrorCount 142
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreCMT.getNonManagedTXConnection(JobStoreCMT.java:168)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.executeInNonManagedTXLock(JobStoreSupport.java:3861)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreSupport.acquireNextTriggers(JobStoreSupport.java:2802)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:287)
<br />Caused by: com.alibaba.druid.pool.GetConnectionTimeoutException: wait millis 60003, active 2, maxActive 1000, creating 0, createErrorCount 142
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnectionInternal(DruidDataSource.java:1568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnectionDirect(DruidDataSource.java:1178)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5074)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.logging.LogFilter.dataSource_getConnection(LogFilter.java:915)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5070)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.dataSource_getConnection(StatFilter.java:724)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.dataSource_connect(FilterChainImpl.java:5070)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1153)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:1139)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource.getConnection(DruidDataSource.java:80)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.baomidou.dynamic.datasource.ds.ItemDataSource.getConnection(ItemDataSource.java:55)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.baomidou.dynamic.datasource.ds.AbstractRoutingDataSource.getConnection(AbstractRoutingDataSource.java:54)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.scheduling.quartz.LocalDataSourceJobStore$2.getConnection(LocalDataSourceJobStore.java:142)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.utils.DBConnectionManager.getConnection(DBConnectionManager.java:108)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.quartz.impl.jdbcjobstore.JobStoreCMT.getNonManagedTXConnection(JobStoreCMT.java:165)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 3 common frames omitted
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:58,510</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:59,018</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:59,525</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:29:59,698</td>
<td class="Message">Unexpected error occurred in scheduled task</td>
<td class="MethodOfCaller">handleError</td>
<td class="FileOfCaller">TaskUtils.java</td>
<td class="LineOfCaller">95</td>
</tr>
<tr><td class="Exception" colspan="6">org.springframework.dao.QueryTimeoutException: Redis command timed out
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:68)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:40)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:38)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:310)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceConnection.await(LettuceConnection.java:1012)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceConnection.lambda$doInvoke$3(LettuceConnection.java:447)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceInvoker$Synchronizer.invoke(LettuceInvoker.java:673)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceInvoker.just(LettuceInvoker.java:80)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceServerCommands.dbSize(LettuceServerCommands.java:70)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.DefaultedRedisConnection.dbSize(DefaultedRedisConnection.java:1633)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jeecg.modules.monitor.service.impl.RedisServiceImpl.getKeysSize(RedisServiceImpl.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.jeecg.modules.monitor.service.impl.RedisServiceImpl.recordCustomMetric(RedisServiceImpl.java:161)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedMethodAccessor267.invoke(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Method.invoke(Method.java:569)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.scheduling.support.ScheduledMethodRunnable.runInternal(ScheduledMethodRunnable.java:130)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.scheduling.support.ScheduledMethodRunnable.lambda$run$2(ScheduledMethodRunnable.java:124)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.micrometer.observation.Observation.observe(Observation.java:498)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:124)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.scheduling.config.Task$OutcomeTrackingRunnable.run(Task.java:85)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.Thread.run(Thread.java:840)
<br />Caused by: io.lettuce.core.RedisCommandTimeoutException: Command timed out after 1 minute(s)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.lettuce.core.internal.ExceptionFactory.createTimeoutException(ExceptionFactory.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.lettuce.core.internal.Futures.awaitOrCancel(Futures.java:233)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:59)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at org.springframework.data.redis.connection.lettuce.LettuceConnection.await(LettuceConnection.java:1010)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 22 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:00,030</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:00,536</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:01,046</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:01,551</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:02,059</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:02,568</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:03,074</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:03,584</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:04,094</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:04,600</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:05,106</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:05,613</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:06,120</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:06,626</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:07,130</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:07,631</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:08,136</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error even">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:08,640</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>
<tr class="error odd">
<td class="Level">ERROR</td>
<td class="Date">2025-09-12 10:30:09,149</td>
<td class="Message">create connection SQLException, url: jdbc:mysql://127.0.0.1:3306/jeecg-boot?characterEncoding=UTF-8&amp;useUnicode=true&amp;useSSL=false&amp;tinyInt1isBit=false&amp;allowPublicKeyRetrieval=true&amp;serverTimezone=Asia/Shanghai, errorCode 0, state 08S01</td>
<td class="MethodOfCaller">run</td>
<td class="FileOfCaller">DruidDataSource.java</td>
<td class="LineOfCaller">2592</td>
</tr>
<tr><td class="Exception" colspan="6">com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:828)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.&lt;init&gt;(ConnectionImpl.java:448)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:241)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:198)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:132)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterAdapter.connection_connect(FilterAdapter.java:764)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterEventAdapter.connection_connect(FilterEventAdapter.java:33)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:244)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:126)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1687)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1803)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2590)
<br />Caused by: com.mysql.cj.exceptions.CJCommunicationsException: Communications link failure

The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
<br />&nbsp;&nbsp;&nbsp;&nbsp;at jdk.internal.reflect.GeneratedConstructorAccessor164.newInstance(Unknown Source)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:500)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:481)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:151)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:89)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.NativeSession.connect(NativeSession.java:120)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:948)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:818)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 12 common frames omitted
<br />Caused by: java.net.ConnectException: Connection refused
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect0(Native Method)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:579)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.Net.connect(Net.java:568)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:593)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at java.base/java.net.Socket.connect(Socket.java:639)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.StandardSocketFactory.connect(StandardSocketFactory.java:156)
<br />&nbsp;&nbsp;&nbsp;&nbsp;at com.mysql.cj.protocol.a.NativeSocketConnection.connect(NativeSocketConnection.java:63)
<br />&nbsp;&nbsp;&nbsp;&nbsp;	... 15 common frames omitted
</td></tr>